Triplet for ARM Linux HardFP ABI

[Paul Brook]

> > It really does seem like a hack to use triplets in this way; I think
> > Paul's point that anything that depends on the toolchain triplet to
> > determine ABI is inherently busted is pretty persuasive.
> 
> Which means the whole GNU way of doing this has always been busted,
> since that's essentially how the world has always worked... :-)

Um, I though that GNU (autoconf) way of doing things was to test for features, 
rather than relying on hardcoded per-system mappings.

Paul